US2106872A - Circular knitting machine - Google Patents

Circular knitting machine Download PDF

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Publication number
US2106872A
US2106872A US257620A US25762028A US2106872A US 2106872 A US2106872 A US 2106872A US 257620 A US257620 A US 257620A US 25762028 A US25762028 A US 25762028A US 2106872 A US2106872 A US 2106872A
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United States
Prior art keywords
dial
needles
needle
cam
transfer
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Expired - Lifetime
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US257620A
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English (en)
Inventor
Holmes Henry Harold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BRINTON CO H
H BRINTON CO
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BRINTON CO H
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods

Definitions

  • This invention consists in improvements in or wise direction of the member, from a transverse relating to circular knitting machines of the shouldered portion. type comprising a set of cylinder needles and a The dial has associated with it a cam mechaset of dial needles. An object of the present innism.
  • dial mechanism comp a discto slide alongside the needle in a path substanlike cover pl extending ov r the p of the dial tially parallel with that in which the needle and formed, a 1701175 u d a w tw 15 moves.
  • the needle and transfer tracks, one for the needle butts and the other for point are slidingly mounted in the same trick, the butts of the transfer-points.
  • the invention is limited to the use of dial needles there is a ble cam 01 Cams to enable the of standard type, that is to say, to needles that necessary timed movements to be imparted 130 are standard articles for use in knitting mathe l needles a d s -P s 0 chines and are thus common articles of comone Preferred example f t e en o Will merce at the present time.
  • One such standard w be des bed in detail with the aid of the actype of needle is the latch needle shown in the compenying draw in h accompanying drawings.
  • the invention is not Figure 1 s deVelOped ew Of the te or o concerned with needles of special formation dife cam-b0!
  • C Plate w e s in t e ont A feature of the invention consists in the em- Position; ployment of a latch needle in. conjunction with Figure 3 is a w similar to F u 2 showing a transfer-point in the manner above referred to. the Cams in e knitting Position; 3
  • the tricks in Figure 4 s a V ew similar to Figure 2 showin the dial are of such width that in addition to the the m in h transfer p ion; usual dial latch needle a transfer-point can also Figure 5 s 8- 01) plan View of the cam Plate slide with a needle in each trick.
  • the dial needles showing the striking and locking levels; are formed with upwardly-projecting butts and Figure 5a is a on O the l e 5 1 0f 35 the transfer-points are in the form of flat strips Figure 5 showing y relative Positions of the also having upwardly-extending butt dial and cylinder needles and an associated trans-
  • Each transfer-point may be formed with a bifer-Point; furcated outer extremity whereof the bifurca- Figure 6 is an under'side plan'view of the dial 40 tions are so formed that they will both lie in a cam Plate with the cams remWed? 40 Figures 7a, 8a, and 9a show details, in plan, of certain of the cams;
  • Figures 7b, 8b and 9b show views looking from the right respectively of Figures 7a, 8a and 9a
  • the transfer-point is conveniently so g 10 and 10b are perspective views f curved as to afford a channel into which an aptwo difl-erent forms f transfeppoima basementte cylinder needle can pass freely when it
  • g 10 and 10b are perspective views f curved as to afford a channel into which an aptwo difl-erent forms f transfeppoima basementte cylinder needle can pass freely when it
  • Like r ference numerals i t lik parts i is m0vedas will be explained more fully herethe several figures of t d i lnafter-into the stitch that has been transferred
  • the number of 50 from a dial n dl t t t -p tneedles in the cylinder is double that of the Preferably, the transfer-point is in the form of needles in the dial In order to enable.
  • ribbed a strip-like member capable of sliding in a trick fabric to be knitted, alternate short and long in the dial and having at its outer end a pointed cylinder needles are employed, as indicated reextension, that projects outwardly in the length spectively at I! and II in Figure 1.
  • the long 55 needles are double-butt needles and when it is desired to produce ribbed knitting, a push-in cam I2 is moved as shown, into the path of the lower butts and takes the needles Ii down into the non-knitting position. In this position the upper butts of the long needles travel in the idle track l3 below the usual stitch and other control cams and remain inoperative.
  • cam i3 will be held outwardly while the needles II are to remain inoperative, and when the cam I3 is thus held outwardly it does not engage the upper butts of the needles II.
  • the cam i2 is removed from the path of the lower butts and the cam I3 is moved inwardly to the position shown 7 in Figure 1 thereby engaging the upper butts, and with the aid. of the lifting cm I! the needles II are raised to the height of the knitting track i6.
  • each needle trick in the dial there is a dial needle 23 ( Figures 3, 4, and 5a) and a transfer-point 2i ( Figure 101: or 10b).
  • the butts 22 of the needles are higher than the butts 23 of the transfer-points.
  • the latter are in the form of strip-like members.
  • the outer ends may be bifurcated, as shown in Figure 10b, to afford projections 23 and 23, or, as shown in Figure 10a, the projection 23 may be replaced by a shoulder 23.
  • the point of projection 23 is intended to enter and hold a stitch already formed on its associated dial needle when it is desired to transfer that stitch to a cylinder needle; and in order to permit the ready passage of the cylinder needle through the stitch so held on the transfer-point, the extremity of the latter is bent as shown to afford a groove or channel 21 into which the needle can pass and thus enter centrally through the stitch.
  • the dial mechanism includes fixed cams 33, 3
  • the transfer-points during the time that the dial needles are knitting, are still maintained inoperative.
  • the cylinder and dial needles will commence to be operative together to knit a length of ribbed fabric at the top, for instance, of a hose or halfhose, for which purpose the dial cam mechanism will have the movable cams adjusted to the radial slide-bar 33.
  • a stud 231 connects the cam 31 with the slide-bar 33, and another stud
  • the transfer-points are projected outwardly by engagement of their butts with the swing cam 3i, and as the needles are drawn inwardly, the extremities 23 of the transfer-points enter the loops of the stitches in succession and retain those loops.
  • the transfer-points are moved outwardly to the maximum extent by the cam 3
  • any desired form of rib can be produced by the proper arrangement of long and short needles in the needle cylinder and corresponding needles in the dial, such arrangements of needles being well understood.
  • FIG. 5 The mechanism by which the movable cams in the dial are moved outwardly and held in the positions of outward adjustment is shown in Figure 5.
  • a striking plate 10 pivotally mounted on the stud H.
  • a stud 12 which is fast in the swing cam 38, extends through a slot 13 in the cover plate 60 and. also into a slot 14 in the striking plate 10.
  • a spring 15 pressing on the stud I2 normally tends to hold the swing cam 38 in its inward position.
  • a locking lever or plate 75 plvotally mounted on a stud i1 is employed.
  • the locking plate 18 is formed with a shoulder 18 which passes under and engages with the nose of the striking plate to when it has been moved outwardly in the manner abovedescribed, and so holds the striking plate in the position indicated.
  • a spring 19 normally tends to press the shoulder it towards the striking plate at all times, and the latter snaps past the corner of the shoulder it into position.
  • another projection can be moved into the path of the outer end of the locking plate 58 so as plvotally to move it on the stud W as will be readily understood from the drawings.
  • a second locking plate Mi which presents a shoulder 8
  • a spring 82 performs a similar function with respect to the locking plate as does the spring 59 with respect to the locking plate it.
  • the swing cam 38 In this position the swing cam 38 is held so that the movement oi. the dial needles effected by the cam 38 is such as to form tuck stitches.
  • the tail end of the locking plate has been moved to free its shoulder l8 irom the nose of the striking plate W, the latter will move inwardly and will be caught by the shoulder M to hold the striking plate at the intermediate position.
  • the tail end of the locking plate 80 when it is required to free its shoulder 81 from the nose of the striking plate can also be swung aside. Any preferred mechanism such as is well understood in the art may be employed for displacin the locking plates 16 and 80 to disengage them from the nose of the striking plate I0.
  • a striking plate 83 plvotally mounted on a stud 84, and a locking plate 85 having a shoulder 86 to engage the nose of the striking plate 83.
  • Springs 81 and 88 serve to control the movements of the striking plate and locking plate in the same manner that the springs 15 and I! control the striking and locking plates respectively for the swing cam 38.
  • an inturned welt can be formed for the tops of hose.
  • the following knitting process is employedz-First, two or more courses of ribbed knitting are produced with the aid of the dial and cylinder needles. The dial needles are then retracted to the inoperative position whilst still retaining their loops.- A number of courses of plain knitting are then produced using all the cylinder needles for which purpose the needles, such as H, previously held inoperative during the knitting of the ribbed courses, are moved upwardly into position with the aid of the cam ll.
  • the invention also includes hose, half-hose and other fabrics knitted on the machine or with the aid of the dial transfer mechanism abovedescribed and by the methods set forth.
  • the usual heeland-toe stitch cam mechanism indicated generally by the reference numeral 50, will be provided when it is required to knit hose and half-hose, but it will be appreciated that the invention can be applied to any type of circular knitting machine.
  • the'cylinder cam-box and the dial cam plate shall be rotated while the needle cylinder and the dial needle bed 60 remain stationary. In a manner well understood, however, this can be reversed and the cylinder and dial beds can revolve while the cam-boxes remain stationary.
  • extremities of the transfer-points such as 25, are preferably slightly downtumed as illustrated, as in this form they are found to enter the loops more freely because the extreme point will be somewhat below the level of that surface of the dial needle on, which the loop, at the time of transfer, is retained.
  • a needle-cylinder for a circular knitting machine, the combination of a needle-cylinder, needles therein, a needle-dial, needles of standard type in said dial, loop-transfer points each associated with a dial needle and slidable in said dial alongside and independently of its needle in a path substantially parallel with that of the needle, a cam to move the transfer points to engage loops on the dial needles, a dial needle clearing cam to clear loops on the dial needles, a withdrawal cam for the dial needle-dial, needles of standard type in said dial,
  • loop tr fer points each slidlngly disposed in the same trick with and alongside a needle to which it is allocated but movable independently of said needle, a cam to move the transfer points to engage loops on the dial needles, a dial-needle clearing cam to clear loops on the dial needles, a withdrawal cam for the dial needles to move them to yield their cleared loops to the transfer points, and a cam to raise the cylinder needles to receive loops from the transfer points.
  • the combination of a needle-cylinder, needles therein, a needle dial, needles of standard type therein, and loop transfer points each of which is associated with and is slidable alongside but independently of an associated dial needle and has a loop-engaging extremity that is formed to pick up a loop from a dial needle and has a portion oifsetin a plane transverse to the axis of the needlecylinder to afford a channel into which a cylinderneedle can freely pass in order to'enter a loop held by the transfer point.
  • a needledial needles in said dial, transfer points one for each needle, each such transfer point being slidable alongside and independently of its needle and tricks formed in the dial of sufficient width to accommodate both a needle and its associated transfer point.
  • a needle-cylinder for a circular knitting machine, the combination of a needle-cylinder, needles therein, a needle-dial, needles of standard type in said dial, loop-transfer points each associated with, and slidable alongside a dial needle to which it is allocated, and dial cam mechanism comprising a cam surface acting vto project a transfer-point outwardly to enter a loop on its associated dial needle, a second cam surface operable to move said associated dial needle inwardly to leave the loop on the transfer point, and a further cam surface operable on the transfer-point subsequently to withdraw it in order to cast oil! the loop held thereby on to a cylinder needle.
  • dial cam mechanism comprising a cam surface acting vto project a transfer-point outwardly to enter a loop on its associated dial needle, a second cam surface operable to move said associated dial needle inwardly to leave the loop on the transfer point, and a further cam surface operable on the transfer-point subsequently to withdraw it in order to cast oil! the loop held thereby on to
  • dial cam mechanism comprising two tracks, one for the needle butts and one for the butts of the transfer-points, a cam surface associated with the transfer-point track to project the transferpoints outwardly to enter loops on their associated dial-needles, and in the needle track a cam surface operable to move the dial-needles inwardly so as to leave their loops on the associated transfer points, and a third cam surface for the transfer-point track and operable on the transfer points submquently to withdraw them to cast oi! their loops on to cylinder needles.
  • a needle cylinder for a circular hitting machine, the combination of a needle cylinder. a needle dial, needles of a standard type in said dial, and loop transferpoints each with and slidable alongside a needle to which it is allocated, and dial cam mechanism comprising tracks for dial needles and transfer-points, movable cam surfaces constituting portions of both tracks, and a single movable member operatively connected to both movable portions so that they are actuated in company to project their associated needles and transfer-points respectively for a transfer operation.
  • chine having a needle cylinder with needles therein, a needle dial with needles and transfer-points therein having the transferpoints each associated with and slidable alongside the dial needle to which it is allocated, and dial cam mechanism for actuating the dial needles and transfer-points, the steps of knitting an inturned welt which comprise operating the dial and cylinder needles to form a plurality of courses of ribbed knitting, retracting and discontinuing the operation of the dial needles with loops retained thereon while operating all the cylinder needles to produce the required length of plain knitting, then operating the transfer-points to transfer the loops from the dial needles to corresponding cylinder needles, and continuing the operation of the cylinder needles to produce plain knitting.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US257620A 1927-04-01 1928-02-28 Circular knitting machine Expired - Lifetime US2106872A (en)

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GB2106872X 1927-04-01

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US2106872A true US2106872A (en) 1938-02-01

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DE (1) DE543004C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622421A (en) * 1951-08-06 1952-12-23 May Hosiery Mills Automatic transfer knitting apparatus
US3470715A (en) * 1965-08-30 1969-10-07 Richard Parthum Round knitting machine for the production of runproof stockings with a welt
US20220325450A1 (en) * 2019-06-17 2022-10-13 Santoni S.P.A. A circular knitting machine with an offset system for the stitch cam of the needle plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2366392A1 (fr) * 1976-10-04 1978-04-28 Philip Morris Procede de tricotage et metier destine a la mise en oeuvre du procede

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622421A (en) * 1951-08-06 1952-12-23 May Hosiery Mills Automatic transfer knitting apparatus
US3470715A (en) * 1965-08-30 1969-10-07 Richard Parthum Round knitting machine for the production of runproof stockings with a welt
US20220325450A1 (en) * 2019-06-17 2022-10-13 Santoni S.P.A. A circular knitting machine with an offset system for the stitch cam of the needle plate

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Publication number Publication date
DE543004C (de) 1932-01-30

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